Saw this on - http://www.andoaston.com/well_bodyrolling

Might be something worth trying for those that aren't in severe pain.

[Yamuna Body Rolling™ is a revolutionary approach to health and fitness using balls designed exclusively for this practice. It consists of a series of routines using 6 to 10-inch balls. Unlike other ball exercises, Yamuna Body Rolling™ goes far beyond random movement and stretch. It allows you to work specific muscles in detail, to create suppleness in tight areas and optimize range of motion.

Yamuna Body Rolling™ reeducates muscles and stimulates bone, creating positive, permanent changes in the body.

Yamuna Body Rolling™ works the way a hands-on practitioner works - only using a ball. The ball replaces hands as it moves on muscles to stretch them, dislodge tension and discomfort, increase blood flow, and promote healing.]

So I searched for videos about it-
https://www.youtube.com/watch?v=FEjpe4Gn4SE

Ando & Aston integrate this into their physical therapy as well. It really helped me release the pecs and subclavius.